Chapter 9 Reference 6
29% Of Sites Face Duplicate Content Issues
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Study: 29% Of Sites Face Duplicate Content Issues & 80% Aren’t Using Schema.org Microdata
A new study shows that duplicate content issues still rage on, and while people are talking about Schema markup, only 20% of sites have implemented it.
From the page's own metadata at tinyurl.com, 2026-08-30.
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